Welding apparatus



April 15 1924. 1,490,191

C. T. ALLCUTT WELDING APPARATUS Filed June 25 1921 ATTOR riiired Apr. 15. 1924.

UNITED STATES EA-TENT oF FI CE;-.;

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To allwhomit-maycancem: A y y suitable velding circuit including means, Be it known that I,G1 zns'mn '1. ALLOU'I'I," such as a condenser or a transformer, 'for a. citizen of the United States, and a. resident discharging a relatively large cnrrent'in a of Pittsburgh, in the count oiAllegheiiy short time;

and State of Pennsylvania, ave invented a" The electrodes or members to be welded new and useful Improvement in W'eldin are placed in the gripping devices, ntleast Apparatus, of which the following is a speci- \one of whic consists of a container'having fication. a viscous solid, such as asphaltum, gum, tar

M invention relates to electro-percussivo and the like therein. Although such viscous wel ing, more especially to a method of and solids may be deformed by continuous presmeans for holding or supporting members sure,,yet they are extremal resistant to dc to be welded. l formation from sudden si'ock and"firmly In, a atent to Chubb, No. 1,066,468, support the members to be welded. are granted uly- 8' 1915, and assigned to'the is established between the electrodes tofuse Westinghouse lDlectric &; Manufacturing the surfaces thereof which are br'ou htinto Company, is described a. method of and ap percussive-i engagement to forge t em fto paratus for joinin metallic bodies by elecgether. tr'o-percussive wel ing. The specific method In the accom anying drawings, forming a therein described consists in ioining mompart hereof an in which like reference charbers, such as w'ires, rods and'the like, b jfu'sacters designate like parts, w

'ing their adjacent surfaces and simu tane percumive engagement. 'eapparatus inwith my inventiomand. cludes a pair of 'grip ing'inembersor chucks Fig. 2 is an enlarged view of the gripping for holdin the mem rs to be'welded and a devices for holding the -electrodes, showin weight or ammer'which is utilized as a perthe electrodes connected to a source-of wel cusslve means for forging the members toing current. gether. The apparatus consists of a-support or It is often desirable" to weld together two base 1 having a. plurality of vertical colno mem ers, one or both of which are of irregumns 2 between which are mounted a pair ular contour or shape. Chucks or grip mg of movable rams 3 and 4, the ram 3 being devices for holding irre arlysha ed dsupported by a plurality of coil s rings 5 to ies are expensive and di cult to ma .e unless normally prcvi e a predetermine space bea great number of pieces of a. given shape tween it and the base 1. The gripping de-f are to be welded because gripping devices vices 6 and 7 are secured. to the base 1 and must be made to conform to the shape of the the ram 8, respectively. The electrodes 8 and article to be gripped. 9, at least one of which is of irregular shape, My invention provides means for holding are inserted in the gripping devices 6 an 7, irregularly shaped members to be electrores fictively. 4o Ipercussively we ded, it being among the oba gripping device 6, as shown in Fig. pacts thereof to rovide a simple, eflicient 2, consists of a container 10 for holding a and inexpensive older or gripping device viscous solid 11 in' which the irregularly -for expeditiously and effectively we ding toshaped electrode 8 is supported. The gether bodies of irregular contours and viscous material 11 may consist of materials as shapes. such as asphaltum, gums, tar and the like. In practicing my invention, I provide an The electrode 8 may be pressed into the apparatus consisting of a base or support viscous material 11 which will firmly having a plurality of columns extending verport. it during the welding operation. ticallv therefrom in which is mounted a the material may be melted, theelectrode on movable ram provided with a gripping deplacedin position therein and the material vice for hold one of the members to be allowedto solidify. The electrode 9 ma welded. A similar gripping device is proconsist'df an elongated metallic bod suc vided in the base. The gripping devices or as wire having a wedge like and ormed the members to be welded are connected to a thereon and is secured in the gripping dep s Figure 1 is a front. elevational of an' ously forging the same togefiher by meansof apparatus for forming welds in" accordance vice 7 in the usual manner. Electrical connections 12 and 13 are made from the membore 8 and 9, respectively, to the secondary winding 14 of a transformer 15. An arc may be formed in the usual manner, as described in the above cited atent to fuse the adjacent surfaces of the e ectrodes which are for percussive enga ement.

It will be r ily seen from the above description of my invention that I have rovidedmeans for holding electrodes whic is inex nsive and effective and may ,be utiliz to firmly hold articles of ir g lar shapes or rough contour. advantage in using viscous solids for giggping the electrodes is that they insulate e electrodes from the apparatus and permit of less expensive construction.

Although I have described a s ific embodiment of my invention, it will obvious to those skilled in the art that various modifications may be made within the scope thereof without de arting from the rindples herein set fort For instance, may employ any suitable viscous material in place of the asphaltum, out or tar and I may omit the containers t erefor and secure the viscous materials directly to the {stationany or movable supgorts in any suitable 'manner. Although have described the .welding of a wire electrode'to an irregularly shamed electrode, it will be apgreciated that both electrodes to be" welde may be of irregular contour and each may be held in together by bringing them into- A considerable viscous solid an a viscous material during the welding operaticn. y

I claim as my invention:-

1..In an electrorcussive welding system, means for holding members to be welded comprisi plastic material.

2. In an e ectrorcussive welding system, means for holding members to be welded com rising a container having plastic materia therein.

3. In an electrnrcussive welding system, means for holding members to be weldedcom rising a container having viscous materia therein.

4. In an electro'percussive olding svstern. means for holding members to be wolded comprising a container having tar thereh a 5. In an electrn-percussive welding system, means for holding members to be welded comprising a. container having asphultum therein.

6. In an electro-percussive welding system, means for holding incmbeis to be it eldcd comprising a container having a gum therein.

7. In a method of electro-percussive welding, the step which-consists in providing a container, fillin said container with n securin a member to'be Welded in said viscous so id.

In testimony 'rvhereof, I have hereunto subscribed my name this 17th day of June CHESTER T. ALLCUTT. 

